CHAS. LENTZ & SONS 
6la$$ BoxcSt etc. 
No. 2736 No. 2735 No. 2740 
2735. Watch Glasses, — Best imported, well annealed, edges ground, 
half deep form, 2 inches in diameter, per dozen $0.30 
2736. Glass BoxeSt with ground-in lid. 
2X2, each 70 
4x4, each 1 00 
2738. Glass Boxes^ of very heavy white clear glass, nicely finished — 
German — with ground cover fitting air-tight. 
2 X i\ inches, each 30 
2f X if inches, each ... 50 
Specially adapted for holding cover-glasses in alcohol. 
2740. Apparatus for Washing; Specimens and Sections of Tissue. 
— As used by Dr. A. O. J. Kelly at German Hospital, Phila- 
delphia. Two holes of considerable size are drilled in a heavy 
jar, one near the top and the other near the bottom at side, 
t. e., in a plane at right angles to the former. A glass 
tube connected to a rubber tube communicating with spigot, 
is inserted into a rubber stopper at the bottom of jar, and a 
syphon tube of larger diameter is inserted in the same man- 
ner in the upper hole. This syphon tube, which reaches 
nearly to the bottom of jar, acts as an outlet. The spigot is 
opened and the water flows in slowly till it reaches the bend 
of the Tantalus syphon when it is rapidly emptied by the action 
thus started. The short arm of the syphon tube is sur- 
rounded with a cylinder of fine wire gauze, reaching above 
the level of the high-water mark to prevent escape of min- 
ute sections. The rate of outflow can be regulated by means 
of a screw pinchcock. The apparatus works continu- 
ously and automatically for any lengfth of time, each . . 2 50 
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